ironb Posted April 25, 2009 Share Posted April 25, 2009 Trying to mount a CR *thumb rest [generic]* on my STI Grandmaster. The screws that came with the *thumb rest [generic]* are too big (screw diameter too big). Does anyone have any info on the type of screw used on the grandmaster? thanks Brad Link to comment Share on other sites More sharing options...
1911jerry Posted April 25, 2009 Share Posted April 25, 2009 (edited) Check with Chuck at Shooters Connection. You will need the 1/2 inch or 3/4 inch long screws. I think they are 5x32x1/2 or 5x32x3/4. He has them for sale. Jerry Edited April 25, 2009 by 1911jerry Link to comment Share on other sites More sharing options...
ironb Posted April 27, 2009 Author Share Posted April 27, 2009 Check with Chuck at Shooters Connection. You will need the 1/2 inch or 3/4 inch long screws. I think they are 5x32x1/2 or 5x32x3/4.He has them for sale. Jerry I called STI and a nice guy helped me out. turned out they are 5x40. I ordered some online that were 25 for $1 and also some hex nuts to help with the threading after I grind 'em down. the shipping cost more than the screws and the nuts. (normalling when I talk about screwing and nuts it gets me into trouble...) Link to comment Share on other sites More sharing options...
uscbigdawg Posted April 27, 2009 Share Posted April 27, 2009 I just took one in to the local hardware store. Found a nut that it threaded in to and then worked backwards from there. I've found a ton of stuff there: - stops/guide screws for the CasePro - Cotter (spelling) pins for Dillon Powder Measures and Primer pick-up tubes Rich Link to comment Share on other sites More sharing options...
kgunz11 Posted April 27, 2009 Share Posted April 27, 2009 It's a 5/40 screw. Get them .750 long and trim the length to fit your application. If you remove the slide and screw the screw in you can see how much length needs to be taken off the screw from inside the dust cover. Link to comment Share on other sites More sharing options...
ironb Posted April 27, 2009 Author Share Posted April 27, 2009 It's a 5/40 screw. Get them .750 long and trim the length to fit your application. If you remove the slide and screw the screw in you can see how much length needs to be taken off the screw from inside the dust cover. Thanks KG. That's exactly what I ordered and plan on doing. Just gotta make sure to trim the screw just right so it doesnt whack the slide. Link to comment Share on other sites More sharing options...
kgunz11 Posted April 27, 2009 Share Posted April 27, 2009 With the slide off, you can get a good visual confirmation on the length you need. Trim them flush and you'll be good to go! Link to comment Share on other sites More sharing options...
uscbigdawg Posted April 27, 2009 Share Posted April 27, 2009 Loctite is your friend. Rich Link to comment Share on other sites More sharing options...
ironb Posted April 27, 2009 Author Share Posted April 27, 2009 Loctite is your friend.Rich lol...i >literally< just got done starting another post on loctite. Link to comment Share on other sites More sharing options...
shred Posted April 27, 2009 Share Posted April 27, 2009 FWIW, you have a really good hardware store if they stock #5-40 screws. I get mine from a local bolt supply house (worth looking to see if there's one in your town if you need a lot of or a weird size-- they're cheaper and have a ton more selection than any hardware store) Link to comment Share on other sites More sharing options...
Tzygä Posted April 28, 2009 Share Posted April 28, 2009 Where do you order those screws ironb? Link to comment Share on other sites More sharing options...
ironb Posted May 1, 2009 Author Share Posted May 1, 2009 Where do you order those screws ironb? I actually found them on a place on amazon: http://www.amazon.com/gp/product/B000FN5PS4 and then I also bought some nuts so I could use them to fix the threading after I cut the screw down. http://www.amazon.com/gp/product/B000FKBKLI The store is called smallparts.com I havent received them yet, so I dont know if they will work. I'll let you know after I get em. Link to comment Share on other sites More sharing options...
Tzygä Posted May 1, 2009 Share Posted May 1, 2009 Ok, let me know. Thanks! Link to comment Share on other sites More sharing options...
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